BioNTech CEO: Pfizer-BioNTech vaccine effective against strains in UK, South Africa

BioNTech CEO Ugur Sahin joined "Squawk Box" on Monday to discuss how effective the Pfizer-BioNTech's coronavirus vaccine is at protecting against the variants of the virus researchers have documented in South Africa and the United Kingdom.
Mon, Jan 11 20217:16 AM EST